Robert Vaughn
(Harry S. Truman)
Arthur Kennedy
(Tom Pendergast)
Martha Scott
(Mamma Truman)
June Dayton
(Bess Truman)
Russell Johnson
(Linaver)
Ronne Troup
(Constance)
Alan Fudge
(Mooney)
James Luisi
(Stranger)
Lou Frizzell
(Quilling)
Leonard Stone
(Werner)
Michael Vandever
(Lorenzo Dayton)
Alice Backes
(Teacher)
Tasha Lee
(Margaret Truman)
Jay Virela
(Pete)